Automatic saw filing machine



(No Model.) 4 sheets-sheen 1.

C. F. EAX. AUTOMATIC SAW FILING MACHINE.

No. 393,901.. Patented 1360.4, 1888.

lllllllll/ll WIIIIIILVIIIII l (No Model.) 4 Sheets-Sheet 2.

A C. I'. IIAX.v AUTOMATIC SAW FILING MACHINE.

180,898,901. Patented neo. 4', 1888.

(No Model.) 4 Sheets-Sheet 3.

C. I. EAX. AUTOMATIC SAW FILING MAGHINB.

Patented Deo. 4, 1888.

flzvelzfol".

N. PETKRSuPhawLnmgnphnr. washington D. t:A

(No Model.) 4 Sheets-Sheet 4.

- A e. P. EAX.

AUTOMATIC SAW FILING MACHINE.

Patented Dee. 4, 1888.

hel-.'Wabington, u: C.

UNITED STATES ATnNT 'i nieren.

AUTOMATIC SAW-FILING MACHINE.

SPECIFICATION forming part of Letters Patent No. 393,901, dated VDecember v4, 1888.

' Application ned June 15, 1887. serai No. 241,348. (No model.)

To all whom, it 771,61/ concern: Y

Beit known that I, C. FRIEDRICH HAX, of Kempten, Bavaria, Germany, have invented a .new and Improved Sharpening-lVIachine for Saws, of which the following is a specification. This invention relates to a machine for sharpening the teeth of saws; and it consists of the various improvements hereinafter fully described.

Figure I represents a top view of. the machine. Fig. II is a cross-section at line A I3,

vFig. I. Fig. III is a cross-section at line@ D, jFig. I. Fig. IV is a section at line E F, Fig. I. Fig.-V-is a section at line G H, Fig. I.

Fig. VI is a plan of the under side of themachine. Fig. VII is an end view of the machine. Fig. VII is a section at line J K, Fig.

VII. Fig. VIII is a cross-section at line R R, Fig. I. Fig. IX is an end view, partly in section, at the line P Q, Fig. XI, showing the operation on a straight saw. Fig. X is a section at line L IWI, Fig. VIII. Fig. XI is a section at line O N, Fig. IX. Fig. XII represents a longitudinal section of the locking device and the mechanism to raiseand lower the Iile. Fig. XIII is a side view of the forward part of the same. Fig. XIV is a bottom view of the same. Fig. XV is a cross-section of t-he same at line a* xx, Fig. XII. bottom view. Fig. XVII is a side view; and

Fig. XVIII is a section at line g/X q/X, Fig. XVII, of the mechanism. for operating the clamp Y. i

The other illustrations represent Vvarious parts separate by themselves.

, a is a plate, to which the severa-l parts of saw attached to the same, to be fixed at any desired angle with the plate a..

` c is a guide for the slide d, to'which the tool or `file isattached. 1

tis the le attached through its end head e with the slide d. The head s has on the under side a nose` or projection, 3', against which a spring, df, bears. (See Fig. XII.)

` The slide d isconnectedto a locking device,

e, provided with an arm, x. This locking device e is made to bear against the under side of the end head, s. l

u u2 are two pins attached to the plate a.. During the forward motion of the slide CZ and iile t the arm :1: comes in contact withthe pin it', whereby thelockin device' e is moved forward under the inclined under side of the end head, s', and thus forces the same, and consequently the iile t, upward to allow, during the backward motion, said ile or. tool to pass clear of the tooth ot' th-e saw. At or near the end of the back motion of the file the arm x comes in contact with the pin u2 and moves thereby7 the locking device c back again, when the action of the spring d moves the file` downward again into its proper position. The spring d. acts at vthe same timeto produce the required pressure of the iile upon the saw-tooth during its 'forward motion. :The file and slide d receive their motion through rod f, attached to the diskplated fast upon the shaft t' and operated through pulley'm".vv

The pulley m is fast upon the shaft 1'., and is connected through pinions p with wheel q, which latter operates, through bevel-gear lc l, shaft 3, and the pulley 7s., running loose upon shaft 11, is connected through pinion n with wheel o, which latter operates, through bevel-gear l*L ll', the shaftfb. The shaft 3 carries a disk, el, provided with a projecting pin, 31, and a similar dislnab, is attached to the shaft 3, provided with a projecting pin, 32. A v

In front of the disks +L and @a sliding bar, i", is arranged, provided with projecting pins and (See Fig. VI.) This sliding bar i: is connected with levers t c, which latter is connected to the belt-shifter yr.

During the motion of the pulley m the disk gis revolved, and the operation of cutting vor sharpening the tooth by means of the file-t proceeds. IVhen the pulley m has made a certain iixed number of revolutions, thepin 3l of disk et comes against pin 33 fof sliding bar fu, moving thereby said bar so that, through its connecting-levers t c, the 4belt-shifter will be operated to move the belt from the pulley m to the pulley k. The pulley 7c turns loose upon the shaft 1'., as above mentioned, and during the motion of said pulley k the motion of the file t, and consequently/the filing` operation, is stopped. "fThe motion` of-th. pulley 7c operates the shaft 3b, near the end of I to the lever r", Fig. Vl.

sition with the tile t.

which disks 4 and cam tic are attached, which operate the pawl-lever 1G and the jaws Y Z, in the manner and tor the purpose hereinafter described. \\'hen the pulley 7.; has made a 5 fixed number of revolutions, pin 32 of disk #lb comes against pin 34 of bar r, and moves thereby the belt back ag'ain upon the pulley ym..

To assist the operation of moving` the belt 1o from pulley m to pulley 7.', or vice versa, a

2o and consequentlyY the belt-shifter r, suddenly into the direction desired.

The end plate, l), has an clongat ion, 7;", central to the tile 1, provided with an opening in which a block, 15, is made to slide, and op- 25 erated by a screw, 24, attached to the elongation b" and passing' through the threaded hub 1l, attached tothe block 15. This block is provided with a conical plug, 10, secured to the block 15 by bolt 9. Upon this conical 3o plug 10 the circular saw S is attached, passing through its center hole, and as the block 15 can be moved upward or downward any diameter ot saw may be attached, so as to bring its circumference into the required po- The horizontal prolongation hX is provided with two slots, 235 and 2313, Fig. VIII. Into the lower slot, $35,a lever, 1S, is fastened at any required distance from the center ot' tile t corresponding with the 4o diameter of the saw. (See Figs. VIT and VIII.)

This lever 1S is made with two slots, 3S) and l0, to allow changing the attachment ot' the ratchet-lever 1U and lever 23 to this lever 1S. To this lever 1S in the slot 39 a ratchet-lever,

1G, is attached, acted upon by spring 1.7, Fig.

VII. ln the upper slot, 3U, two projecting pins, 1.() and 20, Fig. Yll, are fastened-one on each side of the lever 1S-to regulate the motion of said lever according to the size or 5o length of the teeth of the saw.

S is a sliding bar attached to the under side ot' plate u and provided with a projection, 3S. To this bar S a lever, 221, is hinged, provided with a slot, 41, and attached to the lever 1S by a bolt, titi, passing through the slotI l1 in the lever 23 and the slot l0 in lever 1S.

The disk l@ is provided with a projecting pin, 37, which, when coming in contact with the projection SS of sliding' bar S, moves the 6o saine, so that through the lever 23, connected wwvrewith lever 1S, the pawl.lever 16 will act upon the teeth of the circular saw S to turn the same one or more teeth around, as may be desired.

As before mentioned, the saw S is carried upon the conical plug 10 in the block 15. Near the tile t, at the circumference ot the saw, the same is held steady between two Vt'riction-blocks, Y Z. The block Z is attached to the frame l), while the block Y is made movable and attached through levers to a sliding bar, 7, attached to the under side of the plate (l. (See 11`igs. Vl and XVI.) I

Before the disk 4 operates the bar S, and consequently the pawl-lever 1li, l'or the purpose ot turning the saw, as before described, the cam G" acts against the pin 7, attached to the sliding bar 7. This sliding bar 7 is conneet ed through levers 7 and 7l with lever 7, which latter operates the rod 7". This rod 7 worksin a wedge-shaped openingin a rod,7i, attached to the block Y. ly this connection the block Y is moved away from the l'ace ot' the saw, thus allowing the saw to be turned t'reely around by the action ot' the pawl-lever 1t), as above mentioned. To the lever 7-'`I a spring, 7, is at tachcd, which moves all the levers back again in their original position as soon as the pin 7l is relievetfl of the cam tic.

'hen the teeth of a straight saw are to be sharpened, the conical plug 10 is removed andan angle-piece, 25, attached to the block l5, (see Fig. XL) provided with a T-rail, 2b', upon which the straight saw rests. The ratchet-lever lt is removed and a lever, 2S, provided with a nose, 42, as shown in l `ig. XII in plan and elevation, is attached to the lever 18 to move this straight saw forward.

\Vhat I claim is- 1. The combination of pulley on, shaft fz', disk g, slide t7, tile t, with head s', lever a', locking device c, and stop-pins 1l 112, substantially as described.

The combination oi' pulleys 7.'y 7 m, shafts 3 and 3", with intermediate gear, with disks l and 4l', sliding bar 1', and belt-shifter 7', as well as the intermediate connections, substantially as set forth.

23. ln combination with shafts El and 3", operated through pulleys 1n. and 7.', respectively, as described, the cams o and C", sliding bar 5, spring 5, levers t" fu, sliding' bar c, and belt-shifter o', arranged to operate in the manner and for the purpose set forth.

4. The combination of shatt'", operated by pulley 7.', as described, and disk 4G, with sliding bar S, link 23, and lever 1S, and ratchet-lever 16, with spring 17, as and 'or the purpose described.

5. The combination ot shaft Si', operated by pulley 7.', as described, and cani (3C, with sliding bar 7, link 7*', rods 7, link 7, and rod 7", and with rod 7 and friction-clutch Y, substantially' as described.

(5. In combination with prolongation 71" of plate 7J, the block 15, with an gle-pieces E25, T- iron 26, and screw 2l, substantially as and for the purpose described.

C. FRIEDRICH HAX.

YVitnesses:

V. WOLFF, .1. XX'TEICKMAN.

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